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Title: In Drosophila melanogaster, vestigial wings are caused by a recessive allele of a gene that is ... Post by: ceybe on Nov 15, 2017 In Drosophila melanogaster, vestigial wings are caused by a recessive allele of a gene that is linked to a gene with a recessive allele that causes black body color. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. After examining the F2 progeny, Morgan calculated the map distance to be 17 map units. Which of the following is correct about the F2 progeny?
A) black-bodied, normal-winged flies = 17% B) black-bodied, normal-winged flies PLUS gray-bodied, vestigial-winged flies = 17% C) gray-bodied, normal-winged flies PLUS black-bodied, vestigial-winged flies = 17% D) black-bodied, vestigial-winged flies = 17% Title: Re: In Drosophila melanogaster, vestigial wings are caused by a recessive allele of a gene that is ... Post by: GTi_Nicky on Nov 15, 2017 C
Explanation: C) This demonstrates students' understanding that both recombinant phenotypes are included in calculating the crossover frequency. |